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US 6,980,498 B2Granted
Method of recording on recording medium and recording device, and method of reproducing from recording medium and reproducing device
AssigneeSony Corporation
InventorYoichiro Sako
Life of this patent
Estimating the term…
Abstract
A method of recording in which supplied data is recorded by performing an encrypting process to at least a part of the supplied data, an encoding process is executed by using a first error correction code, in the case where the supplied data is recorded without performing the encrypting process, an encoding process is executed by using a second error correction code, and the encoded data is recorded onto a recording medium.
Claims18
A recording method comprising the steps of:
- receiving supplied secure data;
- encrypting at least a part of said supplied secure data to produce encrypted data;
- receiving supplied non-secure data;
- operating a switching unit to output said encrypted data when fed thereto and to output said non-secure data when fed thereto;
- first executing an encoding process by using a first error correction code prior to recording encrypted data output from said switching unit;
- second executing an encoding process by using a second error correction code prior to recording said non-secure data output from said switching unit;
- and
- recording said encoded data from said first and second executing steps onto a recording medium.
5 more elements
A recording method comprising the steps of:
- first discriminating whether supplied data is data in which at least a part of said data has been encrypted;
- operating a switching unit to output the data at least a part of which has been encrypted that is discriminated in said first discriminating step;
- executing an encoding process by a first error correction code when said supplied data is encrypted data output from said switching unit;
- second discriminating whether said supplied data is non-encrypted data;
- operating the switching unit to output the non-encrypted data that is discriminated in said second discriminating step;
- when encryption is performed, executing an encrypting process to said supplied data and, thereafter, executing the encoding process by using said first error correction code;
- when encryption is not performed, executing the encoding process by using a second error correction code;
- and
- recording said encoded data onto a recording medium.
6 more elements
A recording apparatus comprising:
- an encrypting circuit for encrypting supplied secure data and outputting encrypted data;
- a selecting unit for selecting for output either the encrypted data or supplied non-secure data;
- a first encoder for performing an error correction encoding process based on a first error correction code to said encrypted data output from said selecting unit;
- a second encoder for performing an error correction encoding process based on a second error correction code to said supplied non-secure data output from said selecting unit;
- and
- recording means to which output data from said first encoder and output data from said second encoder are supplied and which performs a modulating process to the output data from said first or second encoder and records the modulated data onto a recording medium.
3 more elements
Dependencies are inferred from the claim text.